sharpetronics/fastimage
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Fix GIF global color table flag check

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Zero is a truthy value, which is a problem when checking flags.
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Bianca Nenciu 2021-01-21 17:20:08 +02:00
parent f1628c1539
commit c78578c097
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1 changed files with 1 additions and 1 deletions
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lib/fastimage.rb
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@ -585,7 +585,7 @@ class FastImage
# fields (1) + bg color (1) + pixel ratio (1)
fields = @stream.read(3).unpack("CCC")[0]
if fields & 0x80 # Global Color Table
if fields & 0x80 != 0 # Global Color Table
# 2 * (depth + 1) colors, each occupying 3 bytes (RGB)
@stream.skip(3 * 2 ** ((fields & 0x7) + 1))
end